Cotton picker



April 21, 1931. B. R. BENJAMIN COTTON PICKER Filed Feb. 3, 1927 4 Sheets-Sheet l .-Z7 zwzzZ(-m (B6725 73,562 900 6/ B. R. BENJAMIN 1,801,996

COTTON PICKER Filed Feb. 5. 1927 4 Sheets-Sheet 2 April 21,- 1-931.

April 21, 1931. B. R. BENJAMIN I 1,301,996

' COTTON PICKER Filed Feb. 3, 1927 4 Sheets-Sheet 3 I 4. J57? J10.

OOQODOOODOOOOOOQOQQ ooooooooooooo.oooooo April 21, 1931. 1B. R. BENJAMIN COTTON PICKER Filed Feb. 3, 1927 4 Sheets-Sheet 4 Patented Apr. 21, 1931 UNITED STATES PATENT OFFICE BERT R. BENJAMIN, 01 OAK PARK, ILLINOIS, ASSIGNOR '1'0 INTERNATIONAL m VESTER COMPANY, A CORPORATION NEW JERSEY CO'I'IUN PIOKEB Application filed February 3, 1927. Serial 30. 165,888.

a practical and successful cotton picker which is of novel structure and possesses many advantages in use.

It is a further object of the invention to provide a novel combination of a separator with a dofier which is preferably of the rotary type, so as to act continuously upon the cotton .brought in contact therewith by the picker stems. N

It is also an object of the invention to provide means for separating the picked cotton from dirt and trash before the cotton is delivered from the picker stems to a collection receptacle.

It is afurther object of the invention to provide a cotton picker which is capable of picking cotton upon plants in all vertical positions in which the cotton may be located. In other words, the present invention contemplates a machine which will pick cotton from parts of the plants which may be lying upon the ground or closely adjacent thereto.

Other objects of the invention will appear as the following description proceeds.

For the purpose of illustrating the invention, an embodiment thereof is illustrated in the accompanying drawings, in which,-

Figure 1 is a side elevation;

Figure 2 is a view somewhat in-the nature of a horizontal section taken through the picking mechanism of the illustrative machine, showing the relationships of the picker stems, the dofiers, the separator, and the ele vators;

Figure 3 is a detail view somewhat in the nature of a side elevation, showing a part of the drum casing broken away so as to illustrate the cooperative relations of the dofier, the separator, and the elevator;

Figure 4 is a view somewhat in the nature of a broken sectional view throu h the picker drum casing, the casing being roken away.

to disclose the arrangement of the picker stems and the dofiers, and their operating devices;

Figure 5 is partly a side elevation and partly a vertical section thru the'dofier mechanism and the separator; and 4 Figure 6 is a plan of one of the units of the dofier.

The illustrative machine comprises drum casings 10 and 11, between which a passageway 12 is provided for cotton lants. Within each casing is a battery 0 picker stems, the individual picker stems being caused to travel in the direction of the arrow 13 in Figure 2 of the drawings. Durin its course of movement, each picker stem 14 is projected into cotton plants within the assage-way 12 and is rotated therein by mec anism hereinafter described, to wind up the cotton.

After the picker stem leaves the plant passage-way 12, it approaches a position indicated at 15 in Figure 2 of the drawings, and, as it further proceeds, it is brought into contact with means for stri ping the cotton,

herein shown as a rotary offer 16 movingin the direction indicated by the arrow 17. The picker stems thereafter move thru and past the dofi'er and around to the starting point where they are again made ready to enter the cotton plants. 4

One of the great difliculties in providing a successful cotton picker lies in the necessity of eliminating a suflicient roportion'of the weeds, trash and dirt which are usually gathered with the cotton by a mechanical picking device. In the resent machine leaves, dirt and trash are ejected from both of the casings 10 and 11 by a separator herein shown as a rota disk 18, preferably located at the base of the dofier. The disk 18 preferably rotates with and in the same direction as the dofi'er, and acts to centrifugally cause separation of the dirt and trash from the cotton by throwing the dirt and trash thru the lateral openings 19, which are provided in the side walls 20 of the drum casings and which extend as slots adjacent bracket 37 coope ly extendin the bottoms of the casings exposin about the cotton rearwardl thru the casing38 and one-third of the riphery of each dis The toward a carding w eel 40, which elevates cotton stripped m the picker stems by the the cotton into such a position that it may dofl'ers 16 18 delivered to a conveyer 20 which moves the cotton toward collection receptacles 21. A more detailed explanation of the structure and operation of the picking defolPnd l f ch d th to igure 0 e rawmgs, e icker mechanism, including the picker and the drum casings 10 and 11, is suspended from a wheel supported frame which. is directly connected at its forward end to a tractor 22. As also illustrated in this re of the drawings power is transmi from the power take-off 23 of the tractorto the operating parts of the picker mechanism.

The illustrative picker mechanism is preferabl connected with an arched frame 24 so that it may be adjusted verticall with reto the-frame and the groun In Figure 1 of the drawin s, the picker mechanism is shown in eleva or in inoperative position. In operation, the picker mechanism is lowered so that the shoes 25 ride along the surface of the und. The picker mechanism is also pre erably mounted so that it is free to swin laterally with respect to the frame 24. e devices whereby the picker mechanism is mounted in the manner above indicated include bell cranks 26 and 27 pivotally mounted u on fixed frame supports 28 and 29. The orwardly projecting ends of the bell cranks are pivoted on transverse axes to yokes 30 and 31, which are pivotally associated with the picker mechanism on an axis runnin longitudinally of the machine, or in the direction of the path of travel of the machine. The upper ends of the bell cranks 26 and 27 are preferably adjustably connected by a turnbuckle 32, and, for the purpose of substantially counterbalancing the picker mechanism when it is in operation, springs 33 are provided. These springs are anchored to a fixed part of the machine herein illustrated as the upright 34. The other ends of the springs are associated with a oke 35 which is pivoted to the rear bell cran I, as clearly shown. The bell cranks are adjusted b means of the lever 36 which is prefer ahly non-rotatively mounted about the axis of one of the bell cranks. A fixed detent rates with the lever 36 to hold the latter 1n any desired position.

The machine illustrated in Figure 1 of the drawings includes a rearwardly and upwardcasing 38, which partially houses the e evator 20 and is preferably rigidly secured to a drum casing so as to swim with the icker mechanism. There is pre erably such a basing on each side of the frame, the relative positions of the casings being shown in Figure 2 of the drawings. Referring again to Figure 1, a conveyer 39 moves be acted upon b blasts of air produced by the blower 41. mm the conveyer 38 the cotton drops downwardly from the spout 42 into the collection rece tacle 21. This receptacle is associated wit the frame in such a way that it may be easily replaced by an empty receptacle. In the illustrative structure, rearward frame extensions 43 together with the frame work comprising members 44 and 45 afford sup rts for parallel tracks 46 and 47 upon whic the receptacle may be slidably supported.

It will be noticed from an inspection of Fl? 1 that the frame 24 is upwardly arc ed, the downwardl extending, rearward leg of the frame ing supported by ground wheels 48, and the forward downwardly extending le of the frame 49 carrying a bracket 50, w ich is preferabl provided with a pivotal su portin mem r 51 received by a correspon mgly s aped socket 52, which is in turn carried by a frame extension 53 of the tractor. The extension 53 is secured to the main frame 54 of the tractor at a point in proximity to the transmission 55 and extends underneath the rear axle housing 56.

The transmission devices for connecting the power take-off 23 of the tractor with the picker mechanism include telescoping shaft sections 57 and 58 extending from a driven element in the picker mechanism to a universal joint 59, a part of which is non-rotatively mounted upon a short drive shaft 60 'ournaled within the downwardl exten ing leg 49 of the cotton picker rame. The forward end of the shaft 60 is connected to a telescoping shaft section 61 by means of universal joint members 62 and 63. The shaft section 61 cooperates with the telescoping section 64 which is connected with the power take-ofi 23 by a universal joint device 65.

The foregoing general organization is covered by copending patents to Johnston et a1. Nos. 1,727,708 and 1,727,709 of September 10, 1929.

Beneath the upper wall 66 of the picker mechanism is an intermediate horizontal wall 67. Between these two walls suitable gearing for driving the picker mechanism and the dofl'er is provided. Below the wall 67 the picker stems are located as is clearly indicated in Figure 4 of the drawings. The picker stems are carried by vertically mounted picker bars 68. These bars are preferably tubular in form thruout their main portions. The arts of these bars which extend between the rum head 69 and the lower drum head 70 constitute housings for suitable gearing and shafting for driving the icker stems.

The picker bars are mova ly mounted in the drum heads 69 and 70 and are caused to oscillate relative to the heads 69 and 70 by As the machine is drawn along the ground the branches of the plants are received within the cam mechanism including an outer cam a central passageway L located between the track 71 and an inner cam track 72 both of two casings of the picker mechanism. Low

whichare preferably secured to the under side of the wall 67 as illustrated in Figure 4 of the drawings. The angular positions of the picker bars are chan e by the cam arms 73 which are preferably ormed integral with the picker bars and are extended upwardly so that their upper ends will be interposed between the cam tracks 71 and 72. The n per ends of these arms are advantageous y engaged with the cam tracks thru suitable rollers rotatably mounted upon the arms. The cam arms 73 are offset relative to the longitudinal axes of the icker bars for a purpose hereinafter speci ed.

. The drum heads 69 and 7 O are held rigidly spaced and in the same positions relative to each other by steel columns 75. Each column 75 is provided with integral upper and lower flanges 76 and 77 respectively, bolted as shown to the drum heads. The upper drum head is uonrotatively secured to the driving shaft 7 8 which is preferably supported from an upper position. The shaft 78 is rotated by a beveled gear 79 which is connected with the drive shaft 57 by means of suitable driving devices. The gear 79 is enclosed by a cylindrical structure 81 which also acts as a support extending between the walls 66 and 67.

In Figure 4 of the drawings several of the picker bars hzwe been eliminated for the purpose of clarity of disclosure but it will be appreciated that there is a row of picker bars all around the picker drum structure. This is indicated in Figure 2 of the drawings. The

lower end of the picker drum is centrally held and guided by means of a pilot bearing 82 fixed in the lower wall 83 of the picker casing. It will be appreciated that, as the picker bars are carried around the vertical axis of the picker drum, the picker stems will,

be projected at the various angles which are illustrated in Figure 2 of the drawings. During the orbital movement of the picker bars the picker stems are caused to rotate by a sprocket chain 85 engaged with a driving sprocket 86 and with driven sprockets 87 mounted upon the upper ends of the shafts 88 which extends thru the picker bars and are rotatively connected with the separate picker stems. The driven sprockets 87 are preferably connected with shafts 88 by releasable driving devices such as the friction slip clutches 89 illustrated in Figure 4'of the drawings. In case the picker stems of any picker bar encounter abnormal resistance its slip clutch will allow movements of its sprocket 87 without damage to any part of the structure. The cam arms 73 are offset at the tops of the picker bars so as to allow adequate space for the sprockets 87 and a sprocket chain 85.

hangin branches 0 the plants are icked up by the s oes 25 and are dlrected by t e guides 90 toward the passage-way L. The upper parts of the plants are directed into the same passage-way by the com ression bars 91 and 92. here is a series 0 these bars oneach side of the passage-way L. The bars in each series are preferably vertically s aced asufficient distance to receive the pic or stems of any single horizontal series of the adjacent picker drum. The bars are secured atitheir forward ends to the casing, as indicated at 93, and at their rearward ends they are prefer ably flattened and widened so as to have the shape indicated at 94 in Figure 2 of the drawings. They are held in roperly vertically spaced position by an upright 95, there being interposed between the rearward ends of the bars 91 spacers 96 having guides 97 rigid therewith.

The cam tracks 71 and 72 act to vary the angular projection of the picker stems, as indicated in Figure 2 of the drawings. Referring to the picker drum indicated at K in this figure of the drawings, the picker stems move from the position A in a clockwise direction thru positions D, G and J At the position A, a picker stem is about to pass between adjacent compression bars 91. As it enters the passage-way L, its an larity is gradually changed and it is pro ected into the cotton plants, thereby assuming such a position as that indicated at B. The succeeding portion of the cam cooperating with the rotation of the picker drum K and the shaft 78 brings the picker stem to the position C wherein it is projected to its maximum extent across the plant passage-way'L.

As a picker stem passes from the position B to the position D, it is rotated by the apparatus a ove described so as to wind up mature cotton and pull it from the plant. During the rotation of the picker stems and the winding up of the cotton thereon, the

plants are acted upon by spring devices 98 which promote the gathering of a high percentage of the cotton from the plants.

Referring again to Figure 2 of the drawings, as the picker stems leave the position indicated at D, they are withdrawn from the plant passage-way and their. angularity is gradually changed so that they approach the dofi'er 16 in substantially tangential relationship thereto. Before the picker stems pass between adjacent parts of the dofier 16, their winding up rotation is stopped. Immediately after the picker stems enter the space between adjacent parts of the dofl'er 16 theft; have a position such as that indicated at The next effect of the cam and the picker drum u n the picker stems is to withdraw the cgr stems in the directien of their 1 and toward their butt ends from the do er. There is thus produced an action which romotes etlective stripping of the cotton m the picker stem. This actien willbe seen from an tion of the tiona at E and g: in Figure 2 ems dra As the picker stems progress from the been described with reference to one parand 4 of the drawings ticular picker drum, it will be understood that the picker drums are substantially alike and that the description of the o ration of one will also fit the operation 0 the other. As the picker stems of the opposed drums pass thru the central portion of the plant -way L they are overlapped, the picker stems. hemg so arranged at this period in the operation of the picker mechanism that all the picker stems are in rectan ar arent in vertical section. n other words, the icker stems are located at the vertices of t e squares'with relation to each other, the picker stems in the vertical row indicated at 99 being substantially the same distance from each other as each icker stem in that row is from the correspon -g picker stem in row 190. Stated in another way, it we select two adjacent picker stems in the vertical row 99, they are at the same levels as two adjacent picker stems in the row 100, and all four of these picker stems are arranged at the vertices of a. uare. Under some conditions it has been ound that an effective arrangement of this nature obtains when the sides of the square are ap roximately 1%, inches. Under these con itions there is a minimum of op ortunity for a cotton boll to escape the gat ering or winding u action of the picker stems. Figure 7 of th drawings indicates an arrangement of picker stems similar to that just described.

The position of the dofier of the illustrative machine is indicated in Figures 1, 2, 3 Referring to Figure 2, it will be noted that the dofier is interposed between the conveyer 20 and the ad'acent set hf icker stems. A passage-way or the cotton m the picker stems to the conveyer is formed between the members 94 on one side and the members of the dofier on the other side. The doficr members which constitute one wall of this passage-way are clear- 1 indicated in the drawings as structures mounted in vertically alined tions so as to form a substantially cylin 'cal unit. AsindicatedinFi 1,3and5oi the drawings, these disk- 'ke structures are mounted upon a vertical shaft 110, the shaft being preferably splined so as to non-rotatively mount the structures.

Assignees copending application Serial No. 166,829 filed February 9, 1927, covers the cotton dofling mechanism herein disclosed and the relation of the picking mechanism l l i F f dra eerrin to igure5o the wmgs,' each disk-hke structure ofthe dofler comprises a hub 111 having an annular flange 112 to which a disk 113 is secured. As indicated in Figure 6 of the drawings this disk is preferably formed as a wheei-shaped element having openings 114 therethru. The central disk-like structure illustrated in cm: section in Figure 5 of the drawings is formed with an u wardly presented annular channel 115. nis structure rmits of desirable action of brushes 116, which are illustrated in Figure 5 as being individually cylindrical in form and mounted in the 113 in a circalar series extending upwardl thru the chan= nel 115 to positions preferab y above the upper surface of the disk 113.

On the face of the disk 113 o posite from the channel 115 is a rib 117 for a ording suficient rigidity of the structure and enabling the brushes 116 to be secure] mount-ed in the disk. Externally of the ri 117 the disk 113- is provided with an annular channel 118 opening downwardly of the disk and receiving brushes 119 which are mounted in the disk in a circular series, as are the u wardly extesding brushes 116. The brus es 119 preferably extend downwardly beyond the lower surface of the disk 113 and beyond the lowermost limit of the rib 117. Directly above the channel 118 each disk 113 is provided with a second rib 120.

It will also be noted from an inspection of Figure 5 of the drawings that the o positely extending brushes on ad'acent do er units are offset circumferentialiy of the dofler. This arrangement promotes effective action of the brushes upon the picker stems 14, prolongs the life 0 the brushes, and otherwise improves the o ration of the machine. The manner in which the picker stems pass between adjaeent units of the dofier is indicated in Figure 5, the ositions of the picker stems being illustrated in dotted lines at the right of that figure.

The marginal ortions 121 of the disk-like structures of the ofi'er are preferabl formed with a centrai outwardly presen V0 122 cooperating with the ribs 123 and 124 to form adequate anchorage for the annular bands These bands are referably formed of an elastic, resilient amfmoldable material fashioned so that they will become firmly seated around the disks 113 when they are forced into that position. The band on the upper disk-like structure is protected by g. flange 126 extending over its upper sur- In the assembly .of the illustrative dofier the disk-like structures are placed upon the shaft 110, the lowermost of those structures contacting with an abutment 127 preferably integrally formed upon the lower end of the shaft 110. The hubs of the respective structures abut each other, as illustrated in Figure 5 of the drawings, thus maintaining the individual structures at the correct positions relative to the adjacent structures. After all of the units of the dofier are placed in position upon the shaft 110 the driving sprocket 128 with its splined hub 129 is put in position at the upper end of the shaft. All of the above mentioned units are then secured in their operative positions by a nut 130 which is threaded upon the upper end of the shaft 110.

The abutment 127 at the lower end of the dofl'er structure is preferably circular in form so as to be tightly received within the inner race 131 of a pilot bearing mounted within a removable cap 132. This cap is preferably screw-threadedly mounted within the lower wall 83 of the picker mechanism so as to be removable downwardly.

A separator 18 is preferably located at the lower end of the dofi'er. In the illustrative machine, this separator takes the form of a disk non-rotatively secured to the lowermost disk-like structures of the dofler, as clearly indicated in Figure 5 of the drawings. A downwardly extending, annular flange 134 on the lowermost of the disk-like structures of the dofi'er centers the separator 18 as well as protects the pilot bearing. The separator is preferably circular in form and extends to a substantial distance beyond the peripheries of the disk-like structures of the doifer. It also has its outer portions mounted in close proximity to the lower wall 83 of the picker mechanism. As shown in Figures 1 and 3 of the drawings, the disk 18 is so mounted that the upper surface of its outer portion is below the upper wall of the opening 19' thru which the disk throws dirt and trash, such as bits of stalk and leaves, as the latter come in contact with the disk after their removal with the cotton from the picker stems 14. In practice a substantially continuous stream of extraneous material is ejected from the picker mechanism by the disk 18. The conveyer 20 acts as a wall from which particles of extraneous material rebound and fall to the disk 18 after they are thrown against the conveyer by the dofi'er. The cotton is caught by the conveyer spikes 135 and held so as to be elevated and moved toward the collection receptacle 21. This action of the doifer in throwin material against the conveyer 20' ma be tter understood when reference is ha to Figure 2 of the drawings. The doffer is rotating in a counter-clockwise direction,

as indicated by the arrow 136. The material collected by the picker stems is thus caused to be substantially tangentially acted upon by the dofier so as to move in the direction indicated by the arrow 137. The distance which the material travels from a picker stem to the conveyer at a level adjacent the bottom of the doifer is indicated by the distance between the crosses 138 and 139. When Figure 1 of the drawings is referred to it will be appreciated that the distance of travel of the stripped material is greater near the top of the dofier than near the bottom, the distance of travel of the material near the top of the dofi'er being substantially indicated by the distance between the crosses 140 and 141 of Figure 1. These attributes of the illustrative machine promote desirable separation of the cotton and trash which is gathered along therewith from the cotton plants.

Considering the action of the doifer, the separator, and the elevator at the bottom of the doffer structure, stalk portions and bits of trash having like properties are either dropped directly to the separator disk 18, or caused to rebound from the conveyor 20' to the disk 18. They are then carried around the disk and thrown outwardly thru the opening 19. Such accumulations of cotton as may come into contact with the disk will be carried around until they are caught by the upwardly traveling s ikes 135 of .the conveyer, or caused to re und upwardly from the disk toward the conveyer. They will thus be removed from the mass of material carried around by the disk, thereby promoting desirable separation of the cotton from the trash.

As the wound up cotton with its enclosed trash is removed from the picker stems much of the cotton will be thrown in a direction diverging rearwardly from the direction of movement of bits of trash gathered along with the cotton, as the trash, being heavier, will be thrown off first. As the distance traveled by the cotton and trash increases, their divergence increases correspondingly so that separation is promoted. This separating action is much greater adjacent the top of the doffer than adjacent the disk 18, thus offsetting greater separation which takes place at the bottom of the doifer due to the adjacent location of the separator disk 18.

While the invention has been described with relation to a particular mechanism, it is to be understood that the invention is not limited thereto, but that it is susceptible of use in various combinations and sub-combinations coming within the scope of the appended claims. Y

- du'ing What is claimed is:

1. A cotton picker comprising the combination of picking mechanism, means for dofling cotton from said mechanism, means for preventing the escape of cotton under operation, and separate means for expelling trash operation. cotton picker comprisin the combination of picking mechanism, a %oifer, a casing for the pic ing mechanism, and a rotating disk for expelling trash such as leaves and bits of stalks from the casing.

3. A cotton picker comprising the combination of picking mechanism, a conveyor, a dofier for stripping the cotton from the picking mechanism and propelling it to the conveyer, and means operating beneath the pick ing mechanism and the doifer for expelling trash from the picker.

4. A device of the class described comprising, in combination, a traveling main frame, casings suspended from the main frame, cotton picking devices mounted in said casings, a doifer in each casing for stripping the cotton from the picking devices, a cotton elevator for each casing, and a separator carried by each casing for expelling leaves and trash from the caslng.

5. A device of the class described comprising, in combination, cotton picking mechanism, a casing for said picklng mechanism, an elevator, a dofier for stripping cotton from the picking mechanism and throwing it upon the elevator, and a rotating member extending below the space between the elevator and the dofi'er for expelling trash from the casing.

6. A cotton picker comprisin a battery of picker stems, a plurality of oifer disks for stripping the cotton from the picker stems, a casing for said picker stems and dotfer disks, the casing being provided with a slot in its outer wall, and a separator disk rotating with the dofier disks for expelling trash thru the slot.

7. A cotton icker comprising picking mechanism, do ers, casings for preventing the escape of cotton from the dofiers and picking mechanism, and means movable with the dofiers for expelling trash from the easmgs.

8. A cotton picker comprising, in combination, picking mechanism, a dofier, a casing for t e picking mechanism and the doifer, and a disk moving with the dofl'er for expelling trash such as leaves and bits of stalk from the casing.

9. A device of the class described comprising, in combination, cotton pickin mechanism, a casing for said picking mechanism, a cotton delivery conveyer, a doffer for stripping the cotton from the picking mechanism and throwing it upon the conveyer, and means beneath the doifer and the conveyer for expelling trash from the casing.

10. A cotton picker comprising, in combination, a battery of picker stems, a rotating dofier for stripping the cotton from the picker stems, a casing for said picker stems and the dofier, the casing being provided with a slot in its outer wall, and a se arator disk rotatable beneath the dofler an the picker stems so as to expel trash thru the slot.

11. A cotton picker comprising, in combination, picking mechanism, a cotton delivery conveyer, a dofi'er rotatable upon a vertical axis and operating to strip the cotton from the picking mechanism and throw it on the conveyer, and a separator below the conveyer and the dofier for expelling trash from the picker 12. The combination set forth in claim 11 characterized by a dofler comprisin a plurality of flat circular structures tween which parts of the picking mechanism pass.

13. The combination set forth in claim 11 characterized by means for movin parts of the picking mechanism thru the do er so that those parts extend toward and point toward the conveyer while they are passing thru the dotfer.

14. The combination set forth in claim 11 characterized by means for causin parts of the picking mechanism to approac the side of the dofier which is moving toward the conveyer.

15. A cotton picker comprising rotary picker stems, rotary means for stripping the cotton from the poker stems, a casing for substantially enclosing the picker stems and the stripping means, and continuously acting means rotatable with said stripping means for expelling trash and dirt from the casing.

16. A cotton picker comprising, in combination, picking mechanism, means for removing picked cotton from the picking mechanism, a casing substantiall enclosing the pickin mechanism and sai means, and a centri gally actingdisk for expelling trash from the casing.

17. A cotton picker having cotton picking means and a'centrifugal separator for ejecting trash and dirt contained in the picked cotton.

18. A cotton picker comprising, in combination, cotton picking means, a rotary dotfer for removing the cotton from the picking means, a conveyer, and a separator comprisin a disk located beneath the doffer and exten ing radially beyond the same and in proximity to the conveyer.

19. A machine of the class described comprising in combination, cotton icking means, a rotary dofier for removing t e cotton from the picking means, and a centrifugal se arator movable with the dofi'er and located t erebeneath.

20. A machine of the class described comprising, in combination, cotton picking means, a dofier for removing the cotton from picking means, a conveyor for moving the cotton away from the dofl'er and toward the delivery point, and a separator located operatively between the doifer and the conveyor for separating trash from the cotton and assisting in the delivery of cotton to the conveyor.

21. In a machine of the class described, cotton picking means, a conveyor for transferring the defied cotton to a point of delivery, and a separator acting in conjunction with the dofier and the conveyor to move the cotton in one direction toward a point of delivery and to move trash such as leaves and bits of stalk in a divergent direction whereby the cotton and trash are separated.

In testimony whereof I aflix my signature.

BERT R. BENJAMIN. 

